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package models |
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import ( |
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"gorm.io/gorm" |
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) |
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// Mem structure |
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type Mem struct { |
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gorm.Model `swaggerignore:"true"` |
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UserID uint `json:"user_id" example:"1"` |
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User User `swaggerignore:"true"` |
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CardID uint `json:"card_id" example:"1"` |
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Card Card `swaggerignore:"true"` |
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Quality MemQuality `json:"quality" example:"0"` |
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Repetition uint `json:"repetition" example:"0" ` |
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Efactor float32 `json:"e_factor" example:"2.5"` |
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Interval uint `json:"interval" example:"0"` |
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LearningStage LearningStage `json:"learning_stage"` |
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} |
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// MemQuality enum type |
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type MemQuality int64 |
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const ( |
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MemQualityNone MemQuality = -1 |
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MemQualityBlackout MemQuality = iota |
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MemQualityErrorMCQ |
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MemQualityErrorHints |
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MemQualityError |
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MemQualityGoodMCQ |
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MemQualityPerfect |
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) |
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// FillDefaultValues to fill a Mem with default values for given UserID and CardID |
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func (mem *Mem) FillDefaultValues(userID, cardID uint) { |
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mem.UserID = userID |
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mem.CardID = cardID |
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mem.Quality = MemQualityBlackout |
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mem.Repetition = 0 |
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mem.Efactor = 2.5 |
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mem.Interval = 0 |
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mem.LearningStage = StageToLearn |
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} |
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// ComputeEfactor calculates and sets new efactor using oldEfactor and MemQuality |
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func (mem *Mem) ComputeEfactor(oldEfactor float32, quality MemQuality) { |
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eFactor := oldEfactor + (0.1 - (5.0-float32(quality))*(0.08+(5-float32(quality)))*0.02) |
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if eFactor < 1.3 { |
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mem.Efactor = 1.3 |
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} else { |
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mem.Efactor = eFactor |
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} |
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} |
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// ComputeTrainingEfactor calculates and sets new efactor using oldEfactor and MemQuality |
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// TrainingEfactor is a median between oldEfactor and ComputeEfactor |
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func (mem *Mem) ComputeTrainingEfactor(oldEfactor float32, quality MemQuality) { |
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mem.ComputeEfactor(oldEfactor, quality) |
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computedTrainingEfactor := (oldEfactor + mem.Efactor) / 2 |
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if computedTrainingEfactor < 1.3 { |
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mem.Efactor = 1.3 |
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} else { |
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mem.Efactor = computedTrainingEfactor |
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} |
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} |
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// GetCardType returns the current CardType |
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// The CardType is CardMCQ if internal conditions are matched. |
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// Otherwise, it's Card.Type |
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func (mem *Mem) GetCardType() CardType { |
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if mem.IsMCQ() { |
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return CardMCQ |
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} |
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return mem.Card.Type |
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} |
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// ComputeInterval calculates and sets the interval between reviews |
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func (mem *Mem) ComputeInterval(oldInterval uint, eFactor float32, repetition uint) { |
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switch repetition { |
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case 0: |
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mem.Interval = 1 |
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case 1, 2: |
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mem.Interval = 2 |
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case 3: |
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mem.Interval = 3 |
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default: |
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mem.Interval = uint(float32(oldInterval)*eFactor*0.75) + 1 |
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} |
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} |
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func (mem *Mem) ComputeLearningStage() { |
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switch { |
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case mem.Repetition > 3 && mem.Repetition < 7: |
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mem.LearningStage = StageReviewing |
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case mem.Repetition > 7: |
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mem.LearningStage = StageKnown |
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default: |
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mem.LearningStage = StageLearning |
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} |
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} |
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// ComputeQualitySuccess sets the answer Quality |
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func (mem *Mem) ComputeQualitySuccess() { |
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switch { |
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case mem.GetCardType() == CardMCQ || mem.LearningStage == StageToLearn: |
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mem.Quality = MemQualityError |
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case mem.LearningStage == StageKnown: |
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mem.Quality = MemQualityPerfect |
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default: |
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mem.Quality = MemQualityGoodMCQ |
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} |
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} |
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// ComputeQualityFail sets the answer Quality |
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func (mem *Mem) ComputeQualityFail() { |
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switch { |
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case mem.GetCardType() == CardMCQ: |
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if mem.LearningStage == StageToLearn { |
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mem.Quality = MemQualityBlackout |
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} else { |
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mem.Quality = MemQualityErrorMCQ |
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} |
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case mem.LearningStage == StageLearning: |
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mem.Quality = MemQualityErrorMCQ |
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default: |
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mem.Quality = MemQualityErrorHints |
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} |
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} |
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// IsMCQ returns if the Mem should be an MCQ or not. |
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// It doesn't include Card.Type checks |
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func (mem *Mem) IsMCQ() bool { |
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return mem.LearningStage < StageReviewing || mem.Efactor <= 1.7 || mem.Repetition < 2 || (mem.Efactor <= 2.3 && mem.Repetition < 3) |
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} |
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memnix /
memnix-rest
